Chemistry
Grade-8
Easy
Question
Identify the pair of organic compounds from the following?
- Calcium bicarbonate
- Copper carbonate
- Carbon monoxide
- Benzene
Hint:
Organic compounds consist of only carbon which are bonded to other elements mostly hydrogen or oxygen.
The correct answer is: Benzene
The correct option is d)Benzene.
A compound in which one or more carbon atoms are covalently bonded to atoms of other elements, most commonly hydrogen, oxygen, or nitrogen is called organic compounds.
The formula of benzene is C6H6. Benzene has carbon which is bonded to hydrogen. This makes it an organic compound.
Related Questions to study
Chemistry
Assertion-Reason Type Questions
Assertion (A): CO2 is used in fire extinguishers to put off fires.
Reason (R): It is a non-combustible gas and supports combustion.
Assertion-Reason Type Questions
Assertion (A): CO2 is used in fire extinguishers to put off fires.
Reason (R): It is a non-combustible gas and supports combustion.
ChemistryGrade-8
Chemistry
In the laboratory preparation of carbon monoxide, hydrochloric acid is only used although sulfuric acid reacts with calcium carbonate in the same way as HCl. However, the sulfuric acid is never used because:
(i). Insoluble calcium sulfate formed during this reaction
(ii). Calcium sulfate covers the marble chips and stops the reaction.
(iii). The reaction is a highly exothermic reaction
(iv). To react both of the reactants, many temperature conditions need to be fulfilled
In the laboratory preparation of carbon monoxide, hydrochloric acid is only used although sulfuric acid reacts with calcium carbonate in the same way as HCl. However, the sulfuric acid is never used because:
(i). Insoluble calcium sulfate formed during this reaction
(ii). Calcium sulfate covers the marble chips and stops the reaction.
(iii). The reaction is a highly exothermic reaction
(iv). To react both of the reactants, many temperature conditions need to be fulfilled
ChemistryGrade-8
Chemistry
Match the entries of Column A with those of Column B.
Match the entries of Column A with those of Column B.
ChemistryGrade-8
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When carbon dioxide reacts with sodium oxides, it gives ____
When carbon dioxide reacts with sodium oxides, it gives ____
ChemistryGrade-8
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What are the products obtained from the following chemical reaction?
What are the products obtained from the following chemical reaction?
ChemistryGrade-8
Chemistry
Which of the following fertilizer is manufactured by using carbon dioxide?
Which of the following fertilizer is manufactured by using carbon dioxide?
ChemistryGrade-8
Chemistry
CaCO3 is the chemical formula for
CaCO3 is the chemical formula for
ChemistryGrade-8
Chemistry
When liquid CO2 is cooled at –78oC, it changes into snow-white compound called as
When liquid CO2 is cooled at –78oC, it changes into snow-white compound called as
ChemistryGrade-8
Chemistry
Which of the carbonates does not decompose to give carbon dioxide?
Which of the carbonates does not decompose to give carbon dioxide?
ChemistryGrade-8
Chemistry
Multiple True (T) – False (F) type of Question:
1. Most of the food contain compounds of carbon and oxygen.
2. Carbon monoxide is neither combustible nor a supporter of combustion.
3. Dry ice produces at a very low temperature.
Multiple True (T) – False (F) type of Question:
1. Most of the food contain compounds of carbon and oxygen.
2. Carbon monoxide is neither combustible nor a supporter of combustion.
3. Dry ice produces at a very low temperature.
ChemistryGrade-8
Chemistry
Which of the following statement is incorrect?
Which of the following statement is incorrect?
ChemistryGrade-8
Chemistry
In the laboratory preparation of carbon dioxide, the gas is collected by upward displacement of air because:
In the laboratory preparation of carbon dioxide, the gas is collected by upward displacement of air because:
ChemistryGrade-8
Chemistry
Which of the following gas is used as a refrigerant?
Which of the following gas is used as a refrigerant?
ChemistryGrade-8
Chemistry
What are the primary reactants required for the process of photosynthesis?
What are the primary reactants required for the process of photosynthesis?
ChemistryGrade-8
Chemistry
The nature of carbon dioxide is
The nature of carbon dioxide is
ChemistryGrade-8
